[expo-document-picker] Prevent crashing when picking folder #8930
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Why
Fixes #8837.
How
Some files can be interpreted as a folder. For example the
.band
file is a good example of this. For those files, we should get file size differently, cause otherwise, it will crash the application.Test Plan
.pdf
,.band
,.txt
)Changelog
getDocumentAsync
crashing when picking a folder on iOS.